21090213873

素因数分解:

$3^2\times {\mathrm{257}}^1\times {\mathrm{1213}}^1\times {\mathrm{7517}}^1$

素因数の和:8993

約数の個数: 24

約数和(自身を含む): 30611461608

約数和(自身を除く): 9521247735

約数列:

[1, 3, 9, 257, 771, 1213, 2313, 3639, 7517, 10917, 22551, 67653, 311741, 935223, 1931869, 2805669, 5795607, 9118121, 17386821, 27354363, 82063089, 2343357097, 7030071291, 21090213873]

約数ペア:

[(1, 21090213873), (3, 7030071291), (9, 2343357097), (257, 82063089), (771, 27354363), (1213, 17386821), (2313, 9118121), (3639, 5795607), (7517, 2805669), (10917, 1931869), (22551, 935223), (67653, 311741)]